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Ospreys in 2000

Osprey Numbers Rebound

by
Chris Martin
 

Using the aeiral ladder on 
a fire truck to access an osprey nest on a 40-foot pole
The female osprey at the Stubbs Pond Nest
attempts to distract Audubon Volunteer Dick
Hughes from the business at hand.
Photo by Chris Martin
Reversing a recent pattern of lackluster productivity over the past few years, Ospreys in New Hampshire in 2000 charted their second-best breeding season on record since monitoring by Audubon and the New Hampshire Fish and Game Department began two decades ago. A total of 40 young Ospreys fledged from 24 active nests this past summer. Unlike 20 years ago, or even ten years ago, the state's Osprey pairs are now widely distributed, and nesting successfully, in all four of the Granite State's major watersheds. And this state-listed threatened raptor's prospects for full recovery and delisting now appear better than ever, with the recent enlistment of an important corporate friend to their cause (see sidebar).

Breeding season results

The total 40 fledglings produced from 24 active nests translates to an average of 1.67 young per active nest, which is the highest productivity ever documented for Ospreys in the state. This summer's results also are the second-highest marks ever for total numbers of successful nests (18) and for fledglings (40). The 75% success rate for all active nests is also the highest on record. Productive nests in 2000 were distributed across the state, with nine in the Androscoggin River drainage, four around Great Bay, three in the Merrimack River drainage, and two more in the upper reaches of the Connecticut River. Ospreys nested in all regions of New Hampshire except the southwest: from Pittsburg in the far north to Newington near the seacoast and to Hollis in the state's southern tier.

In heronries and in clearcuts?!

Anyone interested in helping us locate and monitor Osprey nests should be aware that we are increasingly finding that Ospreys seem particularly drawn to active Great Blue Heron nesting colonies and to large forest clearcuts where residual snag trees remain and where fishable waters are nearby. Six of eight new Osprey nests discovered this summer were located in such settings-five in heronries and one in a clearcut. Nearly one third (12 of 40) of this season's fledglings came from these two nesting habitat types.

Banding and contaminant data

For the second straight year, we partnered with researchers from the BioDiversity Research Institute to band Osprey chicks and obtain blood samples that will be analyzed for mercury and other contaminants. So far, we have only accessed one nest per year (the Battery Point nest on Massabesic Lake in 1999, the Stubbs Pond nest on the Great Bay NWR in 2000), but we hope to expand this effort over the next few years. Thanks to our friends at the Newington Fire Department for offering to provide a really big ladder!

Project Osprey Partnership Announced

At the Massabesic Audubon Center this past April, leaders from Public Service Company of New Hampshire (PSNH), the New Hampshire Department of Fish and Game (NHFG), and Audubon signed a formal agreement committing the three organizations to work together in a new wildlife conservation partnership over the next five years. This initiative, called Project Osprey, unites corporate, government, and nonprofit sectors to enhance the recovery of the state's threatened Osprey population and to promote greater public awareness in the overall importance of healthy ecosystems to wildlife.

Using the aeiral ladder on 
a fire truck to access an osprey nest on a 40-foot pole
Having the proper equipment is helpful when
accessing osprey nests, like this one on a 40-foot
pole at Great Bay NWR.
Photo by Chris Martin
The main goals of Project Osprey are to foster a self-sustaining Osprey population, develop a comprehensive educational program, and promote the partnership as a model for more such collaborative efforts among the business community, state natural resource agencies, and nonprofit conservation organizations. Highlights of the agreement include developing a state management plan, installing 15 new nesting platforms, enhancing public viewing opportunities, and creating an Osprey curriculum unit for middle and high school students.

Partners to the agreement are contributing to the initiative in various ways. PSNH is providing a generous grant of $100,000 over five years to support the project, as well as heavy equipment and a range of staff expertise. NHFG brings experience in wildlife biology, outdoor education, and the media. Audubon has been coordinating Osprey monitoring, management, and volunteers for 20 years, and our nature centers offer possible venues for public programming.

To learn more about Project Osprey and volunteer opportunities associated with it, please contact Chris Martin at(603) 224-9909, ext. 317 or cmartin@nhaudubon.org.


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